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Spheres of the Earth
Free Science Powerpoints for Kids and Teachers
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Earth’s Spheres and the Atmosphere
What Are the Spheres of the Earth?
The Earth as a System – Earth’s Spheres
Earth’s Spheres: Are They Round?
The Stuff of the Universe - Cycles
Matter is constantly recycled on earth
See Also: Climate, Weather, Environment, Water Cycle
For Kids
Earth's
4 Major Spheres:
Atmosphere,
Biosphere,
Hydrosphere,
Geosphere
Earth’s Spheres GAMES & Activities for Kids
Free Online Science GAMES & Kids Sites